science

2. low part of the wave
3. the greatest distance that particles are displaced form their normal resting position
4. the changing in an object's frequency
6. changing electric and magnetic fields in space
7. a superposition of two or more waves that produces an intensity equal to the sum of the intensities of the individual waves
13. the bending of waves as they pass an edge
14. the bending of waves when they pass from one medium into another
16. waves that require a medium
17. results from a interference between a wave and its reflected wave
18. the distance to two identical waves
19. the time it takes a wave to cycle

1. waves that cause the particles in a medium to vibrate parallel to the direction for the waves motion
5. a superposition of two or more waves that produces an intensities of the individual waves
8. the combination of two or more waves that result in one wave
9. waves in which the motion of a particle is perpendicular to each other
10. the matter through which a wave travels
11. number of wavelengths that pass at a given point in a given time
12. the bouncing back of a wave when it meets a surface
15. the high point in the wave